#include<string.h>
int removePalindromeSub(char *s)
{
    int length = strlen(s);
    if (length == 0)
        return 0;
    int low = 0, high = length - 1;
    while (low < high) // 若该循环完美执行完那么该字符串恰好就是一个回文串
    {
        if (s[low] != s[high])
            return 2;
        low++;
        high--;
    }
    return 1;
}